News tagged with visual signals

Discovery alters conventional understanding of sight

A discovery by a team of researchers led by a Syracuse University physicist sheds new light on how the vision process is initiated. For almost 50 years, scientists have believed that light signals could not be initiated unless ...

Jun 23, 2011
not rated yet 0

Artificial retina helps some blind people

For two decades, Eric Selby had been completely blind and dependent on a guide dog to get around. But after having an artificial retina put into his right eye, he can detect ordinary things like the curb and ...

Feb 14, 2011
5 / 5 (9) 4

Evolutionary bestseller in image processing

The eye is not just a lens that takes pictures and converts them into electrical signals. As with all vertebrates, nerve cells in the human eye separate an image into different image channels once it has been ...

Nov 10, 2010
5 / 5 (7) 0 | with audio podcast

Ecologists get fish eye view of sexual signals

Carotenoid pigments are the source of many of the animal kingdom's most vivid colours; flamingos' pink feathers come from eating carotenoid-containing shrimps and algae, and carotenoid colours can be seen among garden birds ...

Nov 10, 2010
1 / 5 (1) 0

Brain powered robot

(PhysOrg.com) -- A squat, circular robot scurries along the floor of a laboratory, moving left, then right, then left again, before coming to a stop. A Northeastern University student researcher commands the ...

Jun 01, 2010
4.8 / 5 (9) 1 | with audio podcast